The Gallaghers returns to our TV screens tonight with the season four premiere of "Shameless." With Fiona (Emmy Rossum) in a stable job and relationship and Lip (Jeremy Allen White) enrolled in college, can the our favorite Chicago clan finally realize the middle class American dream? And what's the medical fate of patriarch Frank (William H. Macy)? To answer all those questions - and more - we spoke with the cast during a recent set visit.